According to the Grants' investigation of Galápagos finches, what happened to the beaks of finches?

A. Beaks became larger through artificial selection.
B. Beaks became smaller when they migrated.
C. Beaks became smaller during the finches' lifespan.
D. Beaks became larger over many generations.

The Grants' investigation of Galápagos finches found that beak sizes in finches changed over generations depending on the available food sources, demonstrating the process of natural selection.

Explanation:

According to the Grants' investigation of Galápagos finches, beak sizes in finches varied over different generations depending on the availability of food sources, specifically seeds. During periods of drought when smaller sized seeds were abundant, finches with smaller beaks were more successful at reproducing, leading to the average beak size becoming smaller. Conversely, when larger hard seeds were more plentiful, finches with larger beaks had a survival advantage, contributing to an increase in average beak size over time. This observed variation in beak size across generations is an excellent demonstration of the process of natural selection in action.

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According to the Grants' investigation of Galápagos finches, what happened to the beaks of finches?A. Beaks became larger through artificial selection. B. Beaks became smaller when they migrated. C. Beaks became smaller during the finches' lifespan. D. Beaks became larger over many generations.

Answer :

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Explanation:

Other Questions

According to the Grants' investigation of Galápagos finches, what happened to the beaks of finches?

A. Beaks became larger through artificial selection.
B. Beaks became smaller when they migrated.
C. Beaks became smaller during the finches' lifespan.
D. Beaks became larger over many generations.